A related bit, loosely speaking: Ann Blair at Rorotoko on her new book Too Much to Know: Managing Scholarly Information Before the Modern Age. (Via Bookforum. Here Blair describes her own favorite chapter in the book:
For the most committed note-takers one German professor, Vincent Placcius, published in 1689 instructions for building a large closet in which to store one's notes taken on slips of paper: when opened out the closet could store up 3,000 topical labels, each with a hook onto which to stick the slips that corresponded to that topic.this lovely LRB piece by Keith Thomas on his own reliance on little slips of paper.
(I seem to write regularly here about indexing...)